First U.S. vascular plant extirpation linked to sea level rise? Pilosocereus millspaughii (Cactaceae) in the Florida Keys, U.S.A.

Authors

  • Jennifer Possley Fairchild Tropical Botanic Garden
  • James J. Lange Fairchild Tropical Botanic Garden
  • Alan R. Franck Florida Museum of Natural History
  • George D. Gann The Institute for Regional Conservation
  • Trudy Wilson Florida Department of Environmental Protection
  • Susan Kolterman Florida Department of Environmental Protection
  • Janice Duquesnel Florida Department of Environmental Protection
  • Joseph O’Brien USDA Forest Service, Southern Research Station

DOI:

https://doi.org/10.17348/jbrit.v18.i1.1350

Keywords:

Cacti, at-risk species, climate change, extirpation, ex situ conservation, endemism

Abstract

The global biodiversity crisis affects species across all continents and taxonomic groups. Direct destruction of species and habitats has been a primary driver of declines, though climate change and associated sea level rise are expected to accelerate loss. The flora of low-lying, relatively isolated islands is especially threatened when high species richness intersects with vulnerability to sea level rise. The Florida Keys represent a hotspot for cactus diversity in the eastern United States, with eight species recognized, three of which are endemic to the islands. Though not endemic to the islands, the Key Largo tree cactus (Pilosocereus millspaughii) was known in the United States from only a single population in the Florida Keys. Its decline and imminent extirpation correspond with rising sea levels in the region. The other cacti in the region, and all rare plants in the Florida Keys, are threatened with a similar fate.

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Published

2024-07-09

How to Cite

Possley, J., Lange, J. J., Franck, A. R., Gann, G. D., Wilson, T., Kolterman, S., Duquesnel, J., & O’Brien, J. (2024). First U.S. vascular plant extirpation linked to sea level rise? Pilosocereus millspaughii (Cactaceae) in the Florida Keys, U.S.A. Journal of the Botanical Research Institute of Texas, 18(1), 211–223. https://doi.org/10.17348/jbrit.v18.i1.1350

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